Hyundai Santa Fe: Air conditioning System / A/C Pressure Transducer. Repair procedures
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Before measuring the pressure of the refriferant line, check
whether the refrigerant amount is charged in accordance with
the specified charging amount.
(Refer to Heating, Ventilation, Air Conditioning - "Specifications")
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1. |
Turn the ignition switch OFF.
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2. |
Install the refrigerant recovery/recycling/charging system.
(Refer to Air Conditioning System - "Repair procedures")
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3. |
Turn ON the ignition switch, put into operation the air conditioner.
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4. |
Calculate the reference voltage of the Recovery/Recycle/Recharge machine
high pressure value using the formula below.
Reference voltage (V) = 0.0088 * pressure(psi) + 0.37
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5. |
Measure the sensor output voltage between terminal "1" and "2".

Pin No
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Function
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1
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Ground
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2
|
Voltage
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3
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Power (+5V)
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6. |
If the reference voltage value and the sensor output voltage value are
close to each other, the air conditioner pressure transducer is normal.
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7. |
If 0V is output or the reference voltage value and sensor output voltage
value are not close to each other, replace the air conditioner pressure
transducer.
• |
Check if the output voltage changes when the high pressure
value of the refrigerant line changes.

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1. |
Disconnect the negative (-) battery terminal.
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2. |
Recover the refrigerant with a recovery/charging station.
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3. |
Disconnect the A/C pressure transducer connector (A).

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4. |
Remove the A/C pressure transducer (A).
Tightening torque :
10 - 12 N.m (1.02 - 1.22 kgf.m, 7.4 - 8.8 lb-ft)
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• |
Be careful not to bend the liquid & suction pipe.
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5. |
Install in the reverse order of removal.
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When installing, replace it with a new O-ring (A).
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Description
The A/C Pressure Transducer (APT) converts the pressure value of high pressure
line into voltage value after measuring it...
Description
The evaporator temperature sensor will detect the evaporator core temperature
and interrupt compressor relay power in order to prevent evaporator from freezing
by excessive cooling...
Other information:
Setting functions for the system
Turning the system ON/OFF
With the engine on, shortly press the Lane Driving Assist button located on the
steering wheel to turn on Lane Following Assist. The white or green
indicator light will illuminate on
the cluster...
Removal
1.
Disconnect the battery negative terminal, and wait for at least three
minutes before beginning to work.
2.
Remove the anchor seat belt (A).
3...
Categories

The armrest is located in the center of the rear seat. Pull the armrest down
from the seatback to use it.
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